tools/perf/ui/tui/util.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include "../../util/util.h"
   3 #include <signal.h>
   4 #include <stdbool.h>
   5 #include <string.h>
   6 #include <sys/ttydefaults.h>
   7
   8 #include "../../util/cache.h"
   9 #include "../../util/debug.h"
  10 #include "../browser.h"
  11 #include "../keysyms.h"
  12 #include "../helpline.h"
  13 #include "../ui.h"
  14 #include "../util.h"
  15 #include "../libslang.h"
  16
  17 static void ui_browser__argv_write(struct ui_browser *browser,
  18                                    void *entry, int row)
  19 {
  20         char **arg = entry;
  21         bool current_entry = ui_browser__is_current_entry(browser, row);
  22
  23         ui_browser__set_color(browser, current_entry ? HE_COLORSET_SELECTED :
  24                                                        HE_COLORSET_NORMAL);
  25         ui_browser__write_nstring(browser, *arg, browser->width);
  26 }
  27
  28 static int popup_menu__run(struct ui_browser *menu)
  29 {
  30         int key;
  31
  32         if (ui_browser__show(menu, " ", "ESC: exit, ENTER|->: Select option") < 0)
  33                 return -1;
  34
  35         while (1) {
  36                 key = ui_browser__run(menu, 0);
  37
  38                 switch (key) {
  39                 case K_RIGHT:
  40                 case K_ENTER:
  41                         key = menu->index;
  42                         break;
  43                 case K_LEFT:
  44                 case K_ESC:
  45                 case 'q':
  46                 case CTRL('c'):
  47                         key = -1;
  48                         break;
  49                 default:
  50                         continue;
  51                 }
  52
  53                 break;
  54         }
  55
  56         ui_browser__hide(menu);
  57         return key;
  58 }
  59
  60 int ui__popup_menu(int argc, char * const argv[])
  61 {
  62         struct ui_browser menu = {
  63                 .entries    = (void *)argv,
  64                 .refresh    = ui_browser__argv_refresh,
  65                 .seek       = ui_browser__argv_seek,
  66                 .write      = ui_browser__argv_write,
  67                 .nr_entries = argc,
  68         };
  69
  70         return popup_menu__run(&menu);
  71 }
  72
  73 int ui_browser__input_window(const char *title, const char *text, char *input,
  74                              const char *exit_msg, int delay_secs)
  75 {
  76         int x, y, len, key;
  77         int max_len = 60, nr_lines = 0;
  78         static char buf[50];
  79         const char *t;
  80
  81         t = text;
  82         while (1) {
  83                 const char *sep = strchr(t, '\n');
  84
  85                 if (sep == NULL)
  86                         sep = strchr(t, '\0');
  87                 len = sep - t;
  88                 if (max_len < len)
  89                         max_len = len;
  90                 ++nr_lines;
  91                 if (*sep == '\0')
  92                         break;
  93                 t = sep + 1;
  94         }
  95
  96         pthread_mutex_lock(&ui__lock);
  97
  98         max_len += 2;
  99         nr_lines += 8;
 100         y = SLtt_Screen_Rows / 2 - nr_lines / 2;
 101         x = SLtt_Screen_Cols / 2 - max_len / 2;
 102
 103         SLsmg_set_color(0);
 104         SLsmg_draw_box(y, x++, nr_lines, max_len);
 105         if (title) {
 106                 SLsmg_gotorc(y, x + 1);
 107                 SLsmg_write_string((char *)title);
 108         }
 109         SLsmg_gotorc(++y, x);
 110         nr_lines -= 7;
 111         max_len -= 2;
 112         SLsmg_write_wrapped_string((unsigned char *)text, y, x,
 113                                    nr_lines, max_len, 1);
 114         y += nr_lines;
 115         len = 5;
 116         while (len--) {
 117                 SLsmg_gotorc(y + len - 1, x);
 118                 SLsmg_write_nstring((char *)" ", max_len);
 119         }
 120         SLsmg_draw_box(y++, x + 1, 3, max_len - 2);
 121
 122         SLsmg_gotorc(y + 3, x);
 123         SLsmg_write_nstring((char *)exit_msg, max_len);
 124         SLsmg_refresh();
 125
 126         pthread_mutex_unlock(&ui__lock);
 127
 128         x += 2;
 129         len = 0;
 130         key = ui__getch(delay_secs);
 131         while (key != K_TIMER && key != K_ENTER && key != K_ESC) {
 132                 pthread_mutex_lock(&ui__lock);
 133
 134                 if (key == K_BKSPC) {
 135                         if (len == 0) {
 136                                 pthread_mutex_unlock(&ui__lock);
 137                                 goto next_key;
 138                         }
 139                         SLsmg_gotorc(y, x + --len);
 140                         SLsmg_write_char(' ');
 141                 } else {
 142                         buf[len] = key;
 143                         SLsmg_gotorc(y, x + len++);
 144                         SLsmg_write_char(key);
 145                 }
 146                 SLsmg_refresh();
 147
 148                 pthread_mutex_unlock(&ui__lock);
 149
 150                 /* XXX more graceful overflow handling needed */
 151                 if (len == sizeof(buf) - 1) {
 152                         ui_helpline__push("maximum size of symbol name reached!");
 153                         key = K_ENTER;
 154                         break;
 155                 }
 156 next_key:
 157                 key = ui__getch(delay_secs);
 158         }
 159
 160         buf[len] = '\0';
 161         strncpy(input, buf, len+1);
 162         return key;
 163 }
 164
 165 int ui__question_window(const char *title, const char *text,
 166                         const char *exit_msg, int delay_secs)
 167 {
 168         int x, y;
 169         int max_len = 0, nr_lines = 0;
 170         const char *t;
 171
 172         t = text;
 173         while (1) {
 174                 const char *sep = strchr(t, '\n');
 175                 int len;
 176
 177                 if (sep == NULL)
 178                         sep = strchr(t, '\0');
 179                 len = sep - t;
 180                 if (max_len < len)
 181                         max_len = len;
 182                 ++nr_lines;
 183                 if (*sep == '\0')
 184                         break;
 185                 t = sep + 1;
 186         }
 187
 188         pthread_mutex_lock(&ui__lock);
 189
 190         max_len += 2;
 191         nr_lines += 4;
 192         y = SLtt_Screen_Rows / 2 - nr_lines / 2,
 193         x = SLtt_Screen_Cols / 2 - max_len / 2;
 194
 195         SLsmg_set_color(0);
 196         SLsmg_draw_box(y, x++, nr_lines, max_len);
 197         if (title) {
 198                 SLsmg_gotorc(y, x + 1);
 199                 SLsmg_write_string((char *)title);
 200         }
 201         SLsmg_gotorc(++y, x);
 202         nr_lines -= 2;
 203         max_len -= 2;
 204         SLsmg_write_wrapped_string((unsigned char *)text, y, x,
 205                                    nr_lines, max_len, 1);
 206         SLsmg_gotorc(y + nr_lines - 2, x);
 207         SLsmg_write_nstring((char *)" ", max_len);
 208         SLsmg_gotorc(y + nr_lines - 1, x);
 209         SLsmg_write_nstring((char *)exit_msg, max_len);
 210         SLsmg_refresh();
 211
 212         pthread_mutex_unlock(&ui__lock);
 213
 214         return ui__getch(delay_secs);
 215 }
 216
 217 int ui__help_window(const char *text)
 218 {
 219         return ui__question_window("Help", text, "Press any key...", 0);
 220 }
 221
 222 int ui__dialog_yesno(const char *msg)
 223 {
 224         return ui__question_window(NULL, msg, "Enter: Yes, ESC: No", 0);
 225 }
 226
 227 static int __ui__warning(const char *title, const char *format, va_list args)
 228 {
 229         char *s;
 230
 231         if (vasprintf(&s, format, args) > 0) {
 232                 int key;
 233
 234                 key = ui__question_window(title, s, "Press any key...", 0);
 235                 free(s);
 236                 return key;
 237         }
 238
 239         fprintf(stderr, "%s\n", title);
 240         vfprintf(stderr, format, args);
 241         return K_ESC;
 242 }
 243
 244 static int perf_tui__error(const char *format, va_list args)
 245 {
 246         return __ui__warning("Error:", format, args);
 247 }
 248
 249 static int perf_tui__warning(const char *format, va_list args)
 250 {
 251         return __ui__warning("Warning:", format, args);
 252 }
 253
 254 struct perf_error_ops perf_tui_eops = {
 255         .error          = perf_tui__error,
 256         .warning        = perf_tui__warning,
 257 };